/* El Dinero Claro — hoja de estilos única, sin dependencias externas (mejor velocidad = mejor SEO).
   Identidad: papel cálido, tinta azul marino y acento terracota; titulares con serifa. */
:root {
  --paper: #faf6ef;
  --paper-2: #f2ebdf;
  --card: #ffffff;
  --ink: #1b2a41;
  --ink-soft: #4a5568;
  --muted: #6b7280;
  --navy: #1f3a5f;
  --navy-dark: #152a46;
  --accent: #c2410c;
  --accent-soft: #fde7d3;
  --highlight: #fcd9a8;
  --good: #2f7d5b;
  --line: #e5dccd;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(27, 42, 65, .06), 0 8px 24px rgba(27, 42, 65, .06);
  --max: 1120px;
  --read: 720px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

/* Que la cabecera fija no tape los títulos al saltar a un ancla */
[id] { scroll-margin-top: 84px; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
}

img { max-width: 100%; height: auto; }

a { color: var(--navy); text-decoration-color: rgba(31, 58, 95, .35); text-underline-offset: 3px; }
a:hover { color: var(--accent); text-decoration-color: currentColor; }

h1, h2, h3 { font-family: var(--serif); font-weight: 700; letter-spacing: -.01em; color: var(--ink); }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* ---------- Fondo animado ----------
   Manchas de color muy suaves que se desplazan despacio detrás de todo el contenido.
   Solo se anima transform, que el navegador mueve sin recalcular la página. */
body::before, body::after {
  content: ""; position: fixed; z-index: -1; pointer-events: none;
  width: 60vmax; height: 60vmax; border-radius: 50%;
}
body::before {
  top: -20vmax; left: -15vmax;
  background: radial-gradient(closest-side, rgba(252, 217, 168, .6), transparent);
  animation: drift-a 34s ease-in-out infinite alternate;
}
body::after {
  bottom: -25vmax; right: -15vmax;
  background: radial-gradient(closest-side, rgba(194, 65, 12, .12), transparent);
  animation: drift-b 41s ease-in-out infinite alternate;
}
@keyframes drift-a {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(30vw, 25vh, 0); }
}
@keyframes drift-b {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-35vw, -30vh, 0); }
}

/* Símbolos que suben flotando (portada y llamada final) */
.has-floaters { position: relative; overflow: hidden; isolation: isolate; }
.floaters { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.floaters > span {
  position: absolute; bottom: -80px; left: var(--x); font-size: var(--s, 28px);
  font-family: var(--serif); font-weight: 700; line-height: 1; color: var(--navy);
  opacity: 0; animation: rise var(--d, 26s) linear var(--delay, 0s) infinite;
}
.floaters > span:nth-child(3n) { color: var(--accent); }
.floaters .coin {
  width: var(--s, 28px); height: var(--s, 28px); border-radius: 50%;
  border: 3px solid currentColor; box-shadow: inset 0 0 0 4px var(--paper), inset 0 0 0 6px currentColor;
}
.floaters .bars { display: flex; align-items: flex-end; gap: 3px; height: var(--s, 28px); }
.floaters .bars i { display: block; width: 6px; background: currentColor; border-radius: 2px; }
.floaters .bars i:nth-child(1) { height: 35%; }
.floaters .bars i:nth-child(2) { height: 60%; }
.floaters .bars i:nth-child(3) { height: 100%; }
@keyframes rise {
  0%   { transform: translateY(0) rotate(0deg); opacity: 0; }
  12%  { opacity: .28; }
  85%  { opacity: .28; }
  100% { transform: translateY(var(--rise, -860px)) rotate(var(--r, 40deg)); opacity: 0; }
}
.cta .floaters > span { --rise: -380px; }
.floaters.on-dark > span { color: #fff; }
.floaters.on-dark > span:nth-child(3n) { color: var(--highlight); }
.floaters.on-dark .coin { box-shadow: inset 0 0 0 4px var(--navy), inset 0 0 0 6px currentColor; }

/* ---------- Cabecera ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(250, 246, 239, .92);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px 20px; padding-top: 12px; padding-bottom: 12px;
}
.logo {
  display: inline-flex; align-items: center; white-space: pre;
  font-family: var(--serif); font-weight: 700; font-size: 1.3rem;
  text-decoration: none; color: var(--ink);
}
.logo::before {
  content: ""; width: 26px; height: 26px; border-radius: 8px; flex: none; margin-right: 10px;
  background: linear-gradient(135deg, var(--navy) 0 50%, var(--accent) 50% 100%);
}
.logo span { color: var(--accent); font-style: italic; }
.logo:hover { color: var(--ink); }
.nav { display: flex; flex-wrap: wrap; gap: 4px 6px; font-size: .95rem; }
.nav a {
  text-decoration: none; color: var(--ink-soft); font-weight: 600;
  padding: 6px 12px; border-radius: 999px;
}
.nav a:hover { background: var(--paper-2); color: var(--ink); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--navy); color: #fff; text-decoration: none;
  padding: 12px 22px; border-radius: 999px; font-weight: 700; border: 0; cursor: pointer;
  font-size: 1rem; font-family: var(--sans); line-height: 1.3;
  transition: background .15s, transform .15s;
}
.btn:hover { background: var(--navy-dark); color: #fff; transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--navy); box-shadow: inset 0 0 0 2px var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* ---------- Portada: héroe ---------- */
.hero { padding: 64px 0 40px; }
.hero-grid { display: grid; gap: 40px; grid-template-columns: 1.25fr 1fr; align-items: center; }
.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.hero h1 { font-size: clamp(2.3rem, 6vw, 4rem); line-height: 1.05; margin: 0 0 18px; }
.mark { background: linear-gradient(transparent 58%, var(--highlight) 58% 92%, transparent 92%); padding: 0 .08em; }
.hero p.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 560px; margin: 0 0 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Tarjeta tipo ticket de compra */
.receipt {
  background: var(--card); border-radius: 6px; padding: 26px 26px 30px; box-shadow: var(--shadow);
  font-family: ui-monospace, "Cascadia Mono", Consolas, "Courier New", monospace; font-size: .92rem;
  transform: rotate(1.5deg); position: relative; max-width: 380px; justify-self: center; width: 100%;
  -webkit-mask: radial-gradient(circle 7px at 50% 100%, transparent 98%, #000) 0 0 / 18px 100%;
          mask: radial-gradient(circle 7px at 50% 100%, transparent 98%, #000) 0 0 / 18px 100%;
}
.receipt h2 { font-family: inherit; font-size: .85rem; letter-spacing: .12em; text-transform: uppercase; text-align: center; margin: 0 0 4px; }
.receipt .sub { text-align: center; color: var(--muted); font-size: .8rem; margin: 0 0 14px; }
.receipt .line { display: flex; justify-content: space-between; gap: 10px; padding: 4px 0; }
.receipt .line span:first-child { color: var(--ink-soft); }
.receipt hr { border: 0; border-top: 2px dashed var(--line); margin: 12px 0; }
.receipt .total { font-weight: 700; font-size: 1.05rem; }
.receipt .total span:last-child { color: var(--accent); }
.receipt .foot { text-align: center; color: var(--muted); font-size: .8rem; margin-top: 12px; }

/* Cifras */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 48px; }
.stat { border-top: 2px solid var(--ink); padding-top: 10px; }
.stat strong { display: block; font-family: var(--serif); font-size: 2.2rem; line-height: 1.1; }
.stat span { color: var(--ink-soft); font-size: .95rem; }

/* ---------- Secciones ---------- */
.section { padding: 64px 0; }
.section-alt { background: rgba(242, 235, 223, .72); }
.section-head { max-width: 640px; margin-bottom: 28px; }
.section-head h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); line-height: 1.15; margin: 0 0 8px; }
.section-head p { color: var(--ink-soft); margin: 0; }
.section h2 { margin-top: 0; }

/* Gráfico de interés compuesto */
.growth { display: grid; grid-template-columns: 1fr 1.4fr; gap: 28px; background: var(--card); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.growth label { display: block; font-weight: 700; font-size: .95rem; margin: 16px 0 6px; }
.growth label output { float: right; color: var(--accent); font-family: var(--serif); font-size: 1.1rem; }
.growth input[type=range] { width: 100%; accent-color: var(--accent); }
.growth .figures { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 20px; }
.growth .fig { background: var(--paper); border-radius: var(--radius-sm); padding: 10px 12px; }
.growth .fig small { display: block; color: var(--muted); font-size: .8rem; }
.growth .fig b { font-family: var(--serif); font-size: 1.3rem; }
.growth .fig.interest b { color: var(--accent); }
.growth .story { margin-top: 16px; color: var(--ink-soft); font-size: .97rem; min-height: 3.4em; }
.chart svg { width: 100%; height: auto; display: block; }
.chart .bar-a { fill: var(--navy); }
.chart .bar-i { fill: var(--accent); }
.chart .gridline { stroke: var(--line); stroke-width: 1; }
.chart .axis-label { fill: var(--muted); font-size: 12px; font-family: var(--sans); }
.legend { display: flex; gap: 18px; font-size: .85rem; color: var(--ink-soft); margin-top: 8px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }

/* Caminos */
.paths { display: grid; gap: 18px; grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1000px) { .paths { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .paths { grid-template-columns: 1fr; } }
.path { background: var(--card); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); border-top: 5px solid var(--navy); }
.path:nth-child(2) { border-top-color: var(--accent); }
.path:nth-child(3) { border-top-color: var(--good); }
.path:nth-child(4) { border-top-color: #8a6d3b; }
.path .num { font-family: var(--serif); font-style: italic; color: var(--muted); font-size: .95rem; }
.path h3 { margin: 2px 0 6px; font-size: 1.3rem; }
.path p { color: var(--ink-soft); font-size: .95rem; margin: 0 0 12px; }
.path ul { list-style: none; padding: 0; margin: 0; }
.path li { border-top: 1px solid var(--line); }
.path li a { display: block; padding: 7px 0; text-decoration: none; font-weight: 600; font-size: .95rem; }
.path li a::after { content: " →"; color: var(--accent); }

/* Herramientas de portada: minicalculadora y test */
.duo { display: grid; gap: 20px; grid-template-columns: 1fr 1fr; }
.panel { background: var(--card); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.panel h3 { margin: 0 0 6px; font-size: 1.35rem; }
.panel > p { color: var(--ink-soft); margin: 0 0 12px; font-size: .97rem; }
.panel .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.panel label { display: block; font-weight: 700; font-size: .9rem; margin: 8px 0 4px; }
.panel input {
  width: 100%; padding: 10px 12px; font-size: 1rem; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: var(--paper); color: var(--ink);
}
.panel .answer { margin-top: 16px; padding: 14px 16px; background: var(--accent-soft); border-radius: var(--radius-sm); }
.panel .answer b { font-family: var(--serif); font-size: 1.6rem; color: var(--accent); display: block; line-height: 1.2; }
.quiz-options { display: grid; gap: 10px; margin-top: 10px; }
.quiz-options button {
  text-align: left; padding: 12px 16px; border-radius: var(--radius-sm); border: 2px solid var(--line);
  background: var(--paper); font: inherit; font-size: .97rem; color: var(--ink); cursor: pointer;
}
.quiz-options button:hover { border-color: var(--navy); }
.quiz-options button.right { border-color: var(--good); background: #e5f3ec; }
.quiz-options button.wrong { border-color: var(--accent); background: var(--accent-soft); }
.quiz-feedback { margin-top: 12px; font-size: .97rem; }

/* Filtros de guías */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.chip {
  border: 1px solid var(--line); background: var(--card); color: var(--ink-soft);
  padding: 6px 14px; border-radius: 999px; font: inherit; font-size: .9rem; font-weight: 600; cursor: pointer;
}
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }

/* Tarjetas */
.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); }
.card {
  background: var(--card); border-radius: var(--radius); padding: 22px;
  display: flex; flex-direction: column; box-shadow: var(--shadow);
  transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 2px 4px rgba(27,42,65,.06), 0 14px 30px rgba(27,42,65,.1); }
.card[hidden] { display: none; }
.card h3 { margin: 0 0 8px; font-size: 1.2rem; line-height: 1.3; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--accent); }
.card p { margin: 0 0 14px; color: var(--ink-soft); font-size: .96rem; }
.card .tag {
  align-self: flex-start; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700;
  color: var(--navy); background: var(--paper-2); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px;
}
.card .more { margin-top: auto; font-weight: 700; text-decoration: none; color: var(--accent); }

/* Llamada final */
.cta { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 40px 32px; text-align: center; }
.cta h2 { color: #fff; font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin: 0 0 10px; }
.cta p { color: #d7e0ec; max-width: 560px; margin: 0 auto 22px; }
.cta .btn { background: var(--accent); }
.cta .btn:hover { background: #9a3412; }

/* ---------- Artículos ---------- */
.article { max-width: var(--read); margin: 0 auto; padding: 36px 16px 64px; }
.breadcrumbs { font-size: .85rem; color: var(--muted); margin-bottom: 14px; }
.breadcrumbs a { color: var(--muted); }
.article h1 { font-size: clamp(2rem, 4.5vw, 2.8rem); line-height: 1.12; margin: 0 0 14px; }
.meta { font-size: .9rem; color: var(--muted); margin-bottom: 28px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.article h2 { font-size: 1.65rem; margin: 44px 0 12px; line-height: 1.25; }
.article h3 { font-size: 1.25rem; margin: 30px 0 8px; }
.article ul, .article ol { padding-left: 1.3em; }
.article li { margin-bottom: 6px; }
.article li::marker { color: var(--accent); }

.toc { background: var(--card); border-radius: var(--radius); padding: 18px 24px; margin: 28px 0; box-shadow: var(--shadow); }
.toc strong { display: block; margin-bottom: 4px; font-family: var(--serif); font-size: 1.1rem; }
.toc ol { margin: 0; }

.callout {
  background: var(--accent-soft); border-left: 4px solid var(--accent); padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 26px 0;
}
.disclaimer { font-size: .85rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 16px; margin-top: 44px; }

table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: .95rem; background: var(--card); }
th, td { border-bottom: 1px solid var(--line); padding: 10px 12px; text-align: left; }
thead th { background: var(--ink); color: #fff; font-weight: 700; }
tbody tr:nth-child(even) td { background: #fcfaf6; }
.table-wrap { overflow-x: auto; border-radius: var(--radius-sm); box-shadow: var(--shadow); margin: 20px 0; }
.table-wrap table { margin: 0; }

.faq details { background: var(--card); border-radius: var(--radius-sm); padding: 14px 18px; margin-bottom: 10px; box-shadow: var(--shadow); }
.faq summary { font-weight: 700; cursor: pointer; }
.faq summary::marker { color: var(--accent); }

.related { background: var(--paper-2); border-radius: var(--radius); padding: 20px 24px; margin-top: 36px; }
.related h2 { margin-top: 0; font-size: 1.3rem; }

/* ---------- Calculadoras de página ---------- */
.calc { background: var(--card); border-radius: var(--radius); padding: 24px; margin: 26px 0; box-shadow: var(--shadow); }
.calc label { display: block; font-weight: 700; font-size: .95rem; margin: 12px 0 4px; }
.calc input, .calc select {
  width: 100%; padding: 10px 12px; font-size: 1rem; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: var(--paper); color: var(--ink);
}
.calc .row { display: grid; gap: 0 16px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.calc .btn { margin-top: 18px; }
.result { margin-top: 20px; padding: 16px 18px; background: var(--paper); border-radius: var(--radius-sm); }
.result .big { font-family: var(--serif); font-size: 2rem; font-weight: 700; color: var(--accent); display: block; }
.result:empty { display: none; }

/* ---------- Espacios para anuncios ----------
   Reservan altura fija para evitar saltos de diseño (CLS), que Google penaliza. */
.ad-slot { margin: 28px auto; text-align: center; min-height: 280px; }
.ad-slot::before {
  content: "Publicidad"; display: block; font-size: .7rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: .1em; margin-bottom: 4px;
}
/* El hueco no se muestra hasta que pegues dentro el bloque <ins class="adsbygoogle"> de AdSense */
.ad-slot:not(:has(ins)) { display: none; }

/* ---------- Pie ---------- */
.site-footer { background: var(--ink); color: #c5cedb; padding: 48px 0 28px; font-size: .92rem; }
.site-footer a { color: #fff; text-decoration-color: rgba(255,255,255,.3); }
.site-footer a:hover { color: var(--highlight); }
.footer-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.site-footer h2 { font-size: 1.1rem; color: #fff; margin: 0 0 8px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 4px; }
.copy { margin-top: 28px; border-top: 1px solid #33425c; padding-top: 16px; font-size: .85rem; }

@media (max-width: 860px) {
  .hero-grid, .growth, .duo { grid-template-columns: 1fr; }
  .receipt { transform: none; }
}

@media (max-width: 600px) {
  body { font-size: 17px; }
  .site-header { position: static; }
  [id] { scroll-margin-top: 0; }
  .hero { padding: 40px 0 24px; }
  .section { padding: 48px 0; }
  .stats { gap: 10px; }
  .stat strong { font-size: 1.7rem; }
  .stat span { font-size: .82rem; }
  .growth, .panel { padding: 20px; }
  .panel .row { grid-template-columns: 1fr; }
  .ad-slot { min-height: 250px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .card { transition: none; }
  body::before, body::after { animation: none; }
  .floaters { display: none; }
}